So I have been cleaning my HD and found that 55 GB are unaccounted for on my C:. This is on Vista. Does the properties on C: take hidden files into account? I thought it did and this boggles my mind.

Let me put it this way:
- C: says 207 GB used up
- I select all files on C: and check size to be 152

So.. where's the other 55..?

Any ideas..?

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